{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical"], "input": "Global protein sulfhydryl levels were decreased significantly ( 48 . 4 % ) starting at 1 hour after the APAP dose and maintained at this reduced level through 24 hours ."}
{"Chemical": ["sulfhydryl", "APAP"]}